<!DOCTYPE html>
<html lang="zh-cn">
    <head>
        <meta charset="UTF-8"/>
        <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
        <title>Document</title>
        <style>
            .spinner {
              width: 60px;
              height: 60px;
             
              position: relative;
              margin: 100px auto;
            }
             
            .double-bounce1, .double-bounce2 {
              width: 100%;
              height: 100%;
              border-radius: 50%;
              background-color: #67CF22;
              opacity: 0.6;
              position: absolute;
              top: 0;
              left: 0;
               
              -webkit-animation: bounce 2.0s infinite ease-in-out;
              animation: bounce 2.0s infinite ease-in-out;
            }
             
            .double-bounce2 {
              -webkit-animation-delay: -1.0s;
              animation-delay: -1.0s;
            }
             
            @-webkit-keyframes bounce {
              0%, 100% { -webkit-transform: scale(0.0) }
              50% { -webkit-transform: scale(1.0) }
            }
             
            @keyframes bounce {
              0%, 100% {
                transform: scale(0.0);
                -webkit-transform: scale(0.0);
              } 50% {
                transform: scale(1.0);
                -webkit-transform: scale(1.0);
              }
            }
        </style>
    </head>
    <body>
        <h1>使用 CSS3 实现超炫的 Loading（加载）动画效果</h1>
        <p><a href="http://www.cnblogs.com/lhb25/archive/2013/12/28/loading-spinners-animated-with-css3.html">来源</a></p>
        <div class="spinner">
          <div class="double-bounce1"></div>
          <div class="double-bounce2"></div>
        </div>

    </body>
</html>